Printing – Multicolor – Rotary machines
Patent
1979-07-20
1981-08-04
Fisher, J. Reed
Printing
Multicolor
Rotary machines
101180, 101181, 101182, 101218, 101221, B41F 506, B41F 712, B41F 1336
Patent
active
042815959
ABSTRACT:
A pair of three cylinders train units and a four cylinder train unit are provided in relationship such that a pair of impression cylinders of the former are adjacent to a pair of blanket cylinders of the latter, respectively.
The blanket cylinders of the latter are switched between a first position in which the blanket cylinders make contact with each other and with their respective plate cylinders and a second position in which the blanket cylinders are isolated from each other, make contact with their respective plate cylinders and with their respective impression cylinders of the three cylinder train units.
The switching between extreme positions can be completed in one motion by an angle increase shifting mechanism using gears which are added to the switching means.
Throw-off means for the blanket cylinders can be diverged independently and branchingly from each extreme position by a pin clutch mechanism which is added to the switching means. In order to prevent any racing of the cylinders each throw-off position is defined within the range of which teeth of gears meshing at the extreme positions are not out of gearing.
REFERENCES:
patent: 3329086 (1967-07-01), Pullen
Fisher J. Reed
Kabushiki Kaisha Tokyo Kikai Seisakusho
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